All ICD10 Codes
Chapter 13

M00–M99: Diseases of the Musculoskeletal System and Connective Tissue

Diseases of the Musculoskeletal System and Connective Tissue diagnostic classification updated for 2026.

Chapter Instructions

Excludes2(Not included here. Code separately if applicable.)
  • arthropathic psoriasis (L40.5-)
  • certain conditions originating in the perinatal period (P04-P96)
  • certain infectious and parasitic diseases (A00-B99)
  • compartment syndrome (traumatic) (T79.A-)
  • complications of pregnancy, childbirth and the puerperium (O00-O9A)
  • congenital malformations, deformations, and chromosomal abnormalities (Q00-Q99)
  • endocrine, nutritional and metabolic diseases (E00-E88)
  • injury, poisoning and certain other consequences of external causes (S00-T88)
  • neoplasms (C00-D49)
  • symptoms, signs and abnormal clinical and laboratory findings, not elsewhere classified (R00-R94)
All CodesBillable Only
Internal Codes
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  • M84.377D—

    Stress fracture, right toe(s), subsequent encounter for fracture with routine healing

  • M84.377G—

    Stress fracture, right toe(s), subsequent encounter for fracture with delayed healing

  • M84.377K—

    Stress fracture, right toe(s), subsequent encounter for fracture with nonunion

  • M84.377P—

    Stress fracture, right toe(s), subsequent encounter for fracture with malunion

  • M84.377S—

    Stress fracture, right toe(s), sequela

  • M84.378—

    Stress fracture, left toe(s)

  • M84.378A—

    Stress fracture, left toe(s), initial encounter for fracture

  • M84.378D—

    Stress fracture, left toe(s), subsequent encounter for fracture with routine healing

  • M84.378G—

    Stress fracture, left toe(s), subsequent encounter for fracture with delayed healing

  • M84.378K—

    Stress fracture, left toe(s), subsequent encounter for fracture with nonunion

  • M84.378P—

    Stress fracture, left toe(s), subsequent encounter for fracture with malunion

  • M84.378S—

    Stress fracture, left toe(s), sequela

  • M84.379—

    Stress fracture, unspecified toe(s)

  • M84.379A—

    Stress fracture, unspecified toe(s), initial encounter for fracture

  • M84.379D—

    Stress fracture, unspecified toe(s), subsequent encounter for fracture with routine healing

  • M84.379G—

    Stress fracture, unspecified toe(s), subsequent encounter for fracture with delayed healing

  • M84.379K—

    Stress fracture, unspecified toe(s), subsequent encounter for fracture with nonunion

  • M84.379P—

    Stress fracture, unspecified toe(s), subsequent encounter for fracture with malunion

  • M84.379S—

    Stress fracture, unspecified toe(s), sequela

  • M84.38—

    Stress fracture, other site

  • M84.38XA—

    Stress fracture, other site, initial encounter for fracture

  • M84.38XD—

    Stress fracture, other site, subsequent encounter for fracture with routine healing

  • M84.38XG—

    Stress fracture, other site, subsequent encounter for fracture with delayed healing

  • M84.38XK—

    Stress fracture, other site, subsequent encounter for fracture with nonunion

  • M84.38XP—

    Stress fracture, other site, subsequent encounter for fracture with malunion

  • M84.38XS—

    Stress fracture, other site, sequela

  • M84.40—

    Pathological fracture, unspecified site

  • M84.40XA—

    Pathological fracture, unspecified site, initial encounter for fracture

  • M84.40XD—

    Pathological fracture, unspecified site, subsequent encounter for fracture with routine healing

  • M84.40XG—

    Pathological fracture, unspecified site, subsequent encounter for fracture with delayed healing

  • M84.40XK—

    Pathological fracture, unspecified site, subsequent encounter for fracture with nonunion

  • M84.40XP—

    Pathological fracture, unspecified site, subsequent encounter for fracture with malunion

  • M84.40XS—

    Pathological fracture, unspecified site, sequela

  • M84.411—

    Pathological fracture, right shoulder

  • M84.411A—

    Pathological fracture, right shoulder, initial encounter for fracture

  • M84.411D—

    Pathological fracture, right shoulder, subsequent encounter for fracture with routine healing

  • M84.411G—

    Pathological fracture, right shoulder, subsequent encounter for fracture with delayed healing

  • M84.411K—

    Pathological fracture, right shoulder, subsequent encounter for fracture with nonunion

  • M84.411P—

    Pathological fracture, right shoulder, subsequent encounter for fracture with malunion

  • M84.411S—

    Pathological fracture, right shoulder, sequela

  • M84.412—

    Pathological fracture, left shoulder

  • M84.412A—

    Pathological fracture, left shoulder, initial encounter for fracture

  • M84.412D—

    Pathological fracture, left shoulder, subsequent encounter for fracture with routine healing

  • M84.412G—

    Pathological fracture, left shoulder, subsequent encounter for fracture with delayed healing

  • M84.412K—

    Pathological fracture, left shoulder, subsequent encounter for fracture with nonunion

  • M84.412P—

    Pathological fracture, left shoulder, subsequent encounter for fracture with malunion

  • M84.412S—

    Pathological fracture, left shoulder, sequela

  • M84.419—

    Pathological fracture, unspecified shoulder

  • M84.419A—

    Pathological fracture, unspecified shoulder, initial encounter for fracture

  • M84.419D—

    Pathological fracture, unspecified shoulder, subsequent encounter for fracture with routine healing

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